| 摘要: |
| 通过掺入大粒径球形高吸水树脂（SAP, super absorbent polymer），探索出一种基于内部孔结构的功能型混凝土（SFIC）制备方法.利用球形SAP对混凝土内部孔结构进行准确控制，从而赋予混凝土多种功能，探索了不同孔结构下混凝土的基本性能及功能原理.结果表明：球形SAP的大量掺入可显著延缓混凝土内部相对湿度的降低，促进混凝土后期强度的增长，同时还可显著降低混凝土的密度；通过在混凝土内部形成规则球形孔，使混凝土具备了保温隔热（导热系数可降至0316W/（m·K））和吸声降噪（降噪系数可达0.348）等功能；球形SAP的掺入对混凝土的强度及弹性模量等力学性能具有较显著的降低作用. |
| 关键词: 球形高吸水树脂 孔结构 功能型 内养护 |
| DOI：103969/jissn1007 9629201504013 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51172173）；中央高校基本科研业务费专项资金资助（2014 Ⅳ 053） |
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| Preliminary Exploration on Pore Structural/Functional Integration for Concrete |
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WANG Fazhou1, YANG Jin1, CHENG Hua2, WU Jing3, LI Xinping4
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1.State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China;2.Department of Military Civil Engineering, Logistical Engineering University, Chongqing 400016, China;3.School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China;4.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
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| Abstract: |
| A novel design and preparation method for pore structure/functional integration for concrete （SFIC） was explored by bringing in a kind of large particle size spherical SAP （super absorbent polymer）. The internal pore structure of concrete was controlled by the design of spherical SAP, thus a variety of new functions was achieved. The performance and function mechanism under different pore structures were investigated. Results indicate that the decrease of internal relative humidity is slowed down significantly and the later strength development of concrete is promoted, by bringing in large numbers of spherical SAP. The spherical SAP lefts spherical pores in the concrete, and thus the heat insulation performance （thermal conductivity 0.316W/（m·K）） and noise reduction performance （noise reduction coefficient 0348） are achieved. Moreover, the spherical SAP affects the mechanical properties of the concrete significantly. |
| Key words: spherical super absorbent polymer pore structure functional internal curing |
